“Given chocolate’s rich supply of flavonoids, researchers have also investigated whether it may play a role in cancer prevention. The studies in cancer prevention are still emerging. A recent review of studies on the cancer protective properties of cocoa concluded that the evidence is limited but suggestive. More rigorous studies should be conducted on chocolates’ cancer protective role, concluded the author, because it provides ‘strong antioxidant effects in combination with a pleasurable eating experience.'”
Studies on brain activity have provided evidence supporting the idea that overeating alters our brain’s reward system, which then further drives overeating. This same process is thought to underlie the tolerance associated with addiction. Over time, greater amounts of the substance are required to reach the same level of reward. Studies imply that overeating results in a diminished reward response and a progressively worsening addiction to low-nutrient foods rich in sugar, salt, and fat.
These antioxidants are believed to be easily transported around the body, especially to the delicate parts of the eyes called the macula and the lens. In fact, there are more than 600 different types of carotenoids found in nature, but only about 20 make their way into the eyes. (4) Of those 20, lutein and zeaxanthin are the only two that are deposited in high quantities into the macular portion of the eyes, which is one of the earliest to be damaged during aging.
Dark chocolate makes my list of 15 brain foods to boost focus and memory for good reason. Previous research showed that “acute as well as chronic ingestion of flavanol-rich cocoa is associated with increased blood flow to cerebral gray matter and it has been suggested that cocoa flavanols might be beneficial in conditions with reduced cerebral blood flow, including dementia and stroke.”
It was in 1847 that a British chocolate company (J.S. Fry & Sons) created the first solid edible chocolate bar from three ingredients: cocoa butter, cocoa powder and sugar. Huge names like Cadbury, Mars and Hershey came into the picture in the late 1800s and early 1900s. The love of chocolate has only continued to grow over the years. Now many mainstream chocolate producers make “dark chocolate” that really isn’t very healthy. On the other hand, there are now more and more companies making high-quality, high-cacao/cocoa content chocolate that’s not only dark, but also organic and fairly traded.
According to Harvard University, a systolic pressure under 120 (the first number) and a diastolic pressure under 80 (the second number) is considered normal. Hypertension, or high blood pressure, is indicated by a systolic pressure of 140 or higher and/or a diastolic pressure of 90 or higher. Before and during the challenge Herbert had normal numbers and there was no reason for concern.
Eating sugary foods late at night could lead to a rush in energy at a time when we should be focusing on slowing down and preparing the body to rest. Our 'happy hormone', serotonin is largely produced in the gut and is essential for melatonin production – the 'relaxation' hormone – necessary to aid a good night's sleep. If you're someone who has trouble sleeping, then it might help to reduce the sugar in your diet, and be kinder to your gut.
The antioxidant measurements have been conducted over a period of eight years, from 2000 to 2008. The samples were procured from local stores and markets in Scandinavia, USA and Europe and from the African, Asian and South American continents. Many of the samples of plant material, like berries, mushrooms and herbs, were handpicked. Commercially procured food samples were stored according to the description on the packing and analyzed within four weeks. Handpicked samples were either stored at 4°C and analyzed within three days or frozen at -20°C and analyzed within four weeks. Products that needed preparation such as coffee, tea, processed vegetables etc. were prepared on the day of analysis. Furthermore, all samples were homogenized, dry samples were pulverized and solid samples were chopped in a food processor. After homogenizing, analytical aliquots were weighed. Included in the database are 1113 of the food samples obtained from the US Department of Agriculture National Food and Nutrient Analysis Program. They were collected, homogenized, and stored as previously described . Three replicates were weighed out for each sample. All samples were extracted in water/methanol, except vegetable oils which were extracted in 2-propanol and some fat-rich samples which were extracted in water/2-propanol. The extracts were mixed, sonicated in ice water bath for 15 min, mixed once more and centrifuged in 1.5 mL tubes at 12.402 × g for 2 min at 4°C. The concentration of antioxidants was measured in triplicate of the supernatant of the centrifuged samples.
A recent study by Swedish researchers found that women who ate high amounts of chocolate — about two candy bars per week — had a 20 percent lower risk of stroke. In a similar study, British researchers also found that people who ate more chocolate were 30 percent less likely to have a stroke. However, researchers added that more study is needed to determine the exact amount and types of flavonoid-rich chocolates that would be most help lessen stroke risk.
Just like many of us love to eat chocolate, so does the good bacteria living in your gut, according to a study presented to the American Chemical Society. The nutrients found in chocolate, such as polyphenols, antioxidants, and fiber, aren’t easily digestible, but when good bacteria feeds on the fiber, compounds that are smaller, easily absorbable, and non-inflammatory are released. As a result, inflammation in cardiovascular tissue can be reduced.
Aviram M, Rosenblat M, Gaitini D, Nitecki S, Hoffman A, Dornfeld L, Volkova N, Presser D, Attias J, Liker H, Hayek T. Pomegranate juice consumption for 3 years by patients with carotid artery stenosis reduces common carotid intima-media thickness, blood pressure and LDL oxidation. Clin Nutr. 2004;23:423–433. doi: 10.1016/j.clnu.2003.10.002. [PubMed] [CrossRef]
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With this study we present a comprehensive survey of the total antioxidant capacity in foods. Earlier small-scale studies from other laboratories have included from a few up to a few hundred samples [20-22,29-31], and in 2007 the U.S. Department of Agriculture presented the Oxygen Radical Absorbance Capacity (ORAC) of Selected Foods report including 277 food samples . These studies have been done using different antioxidant assays for measuring antioxidant capacity making it difficult to compare whole lists of foods, products and product categories. Still, a food that has a high total antioxidant capacity using one antioxidant assay will most likely also be high using another assay [20-22]. Consequently, the exact value will be different but the ranking of the products will be mainly the same whichever assay is used. In the present extensive study, the same validated method has been used on all samples, resulting in comparable measures, thus enabling us to present a complete picture of the relative antioxidant potential of the samples.
Rich in nutrients – Chocolate with a high content of cocoa is loaded with nutrients, including a soluble fiber while also rich in iron, magnesium, copper, manganese, and potassium. Dark chocolate also contains a slight amount of mono- and polyunsaturated fats – good fats – which are shown to reduce cholesterol levels and decrease the risk of heart disease.
An influx of sugar into the bloodstream upsets the body's blood-sugar balance, triggering the release of insulin, which the body uses to keep blood-sugar at a constant and safe level. Insulin also promotes the storage of fat, so that when you eat sweets high in sugar, you're making way for rapid weight gain and elevated triglyceride levels, both of which have been linked to cardiovascular disease. Complex carbohydrates tend to be absorbed more slowly, lessening the impact on blood-sugar levels.
Considering that heart disease is the number one killer and that dark chocolate has been shown to substantially reduce risk of cardiovascular disease, I believe regular chocolate consumption can be a good thing. Always choose above 70-percent cacao and select your brand wisely so as to keep your cadmium, lead, and sugar low while maximizing the antioxidant and flavonol benefits.
Due to the higher cocoa content, dark chocolate has a much richer flavor than milk chocolate. The higher the percentage of cocoa, the richer the taste. Cocoa is naturally bitter and very strong-tasting. Chocolate-makers (especially makers of milk chocolate) mellow this flavor by processes, such as alkalizing, fermenting, roasting, and adding milk and/or sugar, all of which can destroy healthy flavanols, alter our ability to use them or negate their health effects all together with unhealthy additives.
This database is to our best knowledge the most comprehensive Antioxidant Food Database published and it shows that plant-based foods introduce significantly more antioxidants into human diet than non-plant foods. Because of the large variations observed between otherwise comparable food samples the study emphasizes the importance of using a comprehensive database combined with a detailed system for food registration in clinical and epidemiological studies. The present antioxidant database is therefore an essential research tool to further elucidate the potential health effects of phytochemical antioxidants in diet.
But there are lesser-known reasons you should indulge in the (bitter)sweet stuff. Dark chocolate has been scientifically proven to keep your brain sharp, your ticker ticking and your skin shielded from the sun’s harmful rays (yes, really). Dark chocolate can be the key to beating that midday slump, accoriding to a new study from Northern Arizona University found.
There is something called a "phagocytic index" which tells you how rapidly a particular macrophage or lymphocyte can gobble up a virus, bacteria, or cancer cell. It was in the 1970's that Linus Pauling realized that white blood cells need a high dose of vitamin C and that is when he came up with his theory that you need high doses of vitamin C to combat the common cold.
Most dark chocolates are produced on the same processing line as chocolate products containing milk. Which is why most of them have advisory labels. A recent testing of 88 bars concluded that “a high proportion of dark chocolate products contain milk at concentrations associated with allergic reactions in sensitive individuals” (see the 2017 study)
Prevent diabetes – Dark chocolate reduces insulin resistance. In a small Italian study, participants who ate a candy bar’s worth of dark chocolate once a day for 15 days saw their potential for insulin resistance drop by nearly half. The flavonoids, which are the antioxidants in dark chocolate, create a gas called nitric oxide that helps control insulin sensitivity.
Oxidative stress is believed to play a central role in the pathogenesis of neurodegenerative diseases, but a nutrient-dense diet seems to lower one’s risk. The Journal of the American Medical Association of Neurology reports that higher intake of foods rich in antioxidants, such as vitamin C and vitamin E, may modestly reduce long-term risk of dementia and Alzheimer’s. (10)
Among dark chocolate’s most researched benefit is its role in preventing heart disease. British researchers analyzed seven studies on chocolate and cardiovascular health involving more than 114,000 people in the United States, Germany, Japan, the Netherlands, and Sweden and found that people who ate more chocolate significantly reduced their risk for heart disease. Researchers concluded that people who ate the most chocolate weekly had a 37 percent lower risk of any heart disease than those who ate the least amounts of dark chocolate.
"She can have fresh fruit as the amount of fructose/glucose in fruit is not high. It's also bound in a food matrix, and with the fibre it contains it doesn't get absorbed like white granulated sugar," Catsicas said. "It does not cause high blood sugar and a corresponding insulin response. The portion size is important, though: only 100 to 150g fruit at a time and, as mentioned, only 1–2 portions per day."